High Availability, Scalability, and FlexibilityRedundant, hot-swappable hardware components including RAID controllers, power supplies and cooling fans, eliminating single points of failure. Some features include a high-availability algorithm, firmware-embedded data protection functions, innovative cache backup modules to protect cached data during power outage. Modular designs and simple, easy to use management interfaces are designed for ease of installation, use and maintenance. In addition, cost is reduced for future expansion - easily scale up storage capacity from 120-240 drives to accommodate business expansion needs, using optional JBOD data modules.